cache.yml (#21)

added cache workflow

.github/workflows/cache.yml

@@ -0,0 +1,106 @@
+name: Update cache from SVN
+
+on:
+  push:
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+  schedule:
+  - cron: '59 */3 * * *' # every third hour to keep cache up to date
+
+jobs:
+  # This workflow contains a single job called "build"
+  mirror:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+    continue-on-error: true
+
+    steps:
+      - name: install git-svn package
+        run: |
+          sudo apt-get remove git git-man
+          sudo apt-get update
+          sudo apt-get install git-svn --no-install-recommends
+
+      - name: checkout authors
+        uses: actions/checkout@v2.4.0
+        with:
+          ref: travis
+          path: ./authors
+
+      - name: Get current date 
+        id: get-date
+        run: |
+          echo "::set-output name=timestamp::$(/bin/date -u "+%Y%m%d%H" )"
+        shell: bash
+
+      - name: Cache runners svn-2-git-fhem mirror directory  
+        # Some room for improvement because we create a new cache on every run where a new ref is fetched, this isn't very nice, normaly we need only the last one and it takes 7 days until they are deleted
+        id: cache-fhem
+        uses: actions/cache@v2.1.6
+        with:
+          path: |
+            ./src/fhem-mirror/.git
+          key: ${{ runner.os }}-fhemsvndir-${{ steps.get-date.outputs.timestamp }}
+          restore-keys: |
+            ${{ runner.os }}-fhemsvndir-
+
+      #- name: remove gitconfig
+      #  run: |
+      #    rm ./src/fhem-mirror/.git/config 
+          
+      - name: checkout main branch
+        uses: actions/checkout@v2.4.0
+        with:
+          path: ./src/fhem-mirror
+          clean: false
+
+      - name: generate merged authors file
+        run: |
+          cd /tmp
+          svn log https://svn.fhem.de/fhem --xml --quiet | grep author | sort -u | perl -pe 's/.*>(.*?)<.*/$1 = $1 <>/' > ${GITHUB_WORKSPACE}/authors/authors_svn.txt;
+          cat ${GITHUB_WORKSPACE}/authors/authors.txt ${GITHUB_WORKSPACE}/authors/authors_svn.txt | sort -u -k1,1 > ${GITHUB_WORKSPACE}/authors/authors_merged.txt;
+          ls -la ${GITHUB_WORKSPACE}/authors/authors_merged.txt;
+
+      - name: fetch from svn
+        id: fetchsvn
+        timeout-minutes: 120
+        working-directory: ./src/fhem-mirror
+        run: |
+          echo "::group::git svn init"
+          git svn init --trunk=trunk --tags=tags --prefix=svn/ https://svn.fhem.de/fhem;
+          git config --add svn.authorsfile "${GITHUB_WORKSPACE}/authors/authors_merged.txt"
+          git config --add svn-remote.svn.preserve-empty-dirs "true" ;
+          git config --add svn-remote.svn.placeholder-filename ".gitkeep" ;
+          echo "Current .git/config file content:";
+          cat ${GITHUB_WORKSPACE}/src/fhem-mirror/.git/config;
+          echo "::endgroup::"
+          
+          echo "::set-output name=SVN_FETCH_STATUS::incomplete"
+          # Run fetches after init, go pick up some base refs for the cache on first run only!
+          RET=124
+          c=1
+          while [ $RET -eq 124 ]; do
+            echo "::group::Fetch ${c}/5"
+            timeout 1200 git svn --log-window-size=200 -q fetch && RET=$? || true
+            if [ "$RET" -ne 0 ] && [ "$RET" -ne 124 ]; then
+              echo "::set-output name=SVN_FETCH_STATUS::error"
+            fi 
+            ((c++)) && ((c==6)) && break
+            echo "::endgroup::"
+          done
+          if [ "$RET" -eq 0 ]; then          
+            echo "::set-output name=SVN_FETCH_STATUS::complete"
+          fi
+
+     # - name: Copy Workflow Files to target
+     #   if: ${{ steps.fetchsvn.outputs.SVN_FETCH_STATUS == 'complete' }}
+     # run: |
+     #   cp -R ${GITHUB_WORKSPACE}/main/.github ./src/fhem-mirror
+
+      - name: Verify no fetch error state
+        if: ${{ steps.fetchsvn.outputs.SVN_FETCH_STATUS == 'error' }}
+        run: |
+          echo "A permanent error occured"
+          exit 1